depends on if you are running them on bouncers or behind boards up off the bottom. If you are running them close to the bottom and the boat slows from a wave, as the harness gets near bottom, the treble will pick up zebra mussles. I quit running a treble on the back on Winnebago when pulling bouncers for that reason.
I will use both depending on the bite. I usually start with two Lazer sharp octopus hooks. The big thing on the bay is to set your hooks about 3-4″ apart.